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/****************************************************************************
 *   Copyright (C) 2011 by Claas Anders "CaScAdE" Rathje                    *
 *   admiralcascade@gmail.com                                               *
 *   Project-URL: http://www.mylifesucks.de/oss/c-epilepsy/                 *
 *                                                                          *
 *   This program is free software; you can redistribute it and/or modify   *
 *   it under the terms of the GNU General Public License as published by   *
 *   the Free Software Foundation; either version 2 of the License.         *
 *                                                                          *
 *   This program is distributed in the hope that it will be useful,        *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of         *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the          *
 *   GNU General Public License for more details.                           *
 *                                                                          *
 *   You should have received a copy of the GNU General Public License      *
 *   along with this program; if not, write to the                          *
 *   Free Software Foundation, Inc.,                                        *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.              *
 ****************************************************************************/

#include "timer1.h"

// 16 bit timer
// critical for pwm and stuff
// periodic uncritical stuff should go to the non-blocking timer0

void timer1_init() {
    // CTC Mode
    TCCR1B = (1 << WGM12);

    // Prescale 8
    TCCR1B &= ~(1 << CS10);
    TCCR1B |= (1 << CS11);
    TCCR1B &= ~(1 << CS12);

    // Compare every 100us at 20MHz
    OCR1A = 250;

    // Compare Interrupt enable
    TIMSK1 |= (1 << OCIE1A);
}

// every 100us

ISR(TIMER1_COMPA_vect, ISR_BLOCK) {

    // every 100us
    led_timer_callback();
}